CVE-2026-21304

HIGH

Adobe InDesign < 20.5.1 - Heap-based Buffer Overflow via Malicious File

Title source: llm
STIX 2.1

Description

InDesign Desktop versions 21.0, 19.5.5 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.0024
EPSS Percentile 14.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-122 CWE-787
Status published
Products (1)
adobe/indesign < 20.5.1
Published Jan 13, 2026
Tracked Since Feb 18, 2026